California earthquakes

M1.7 earthquake 5 km NE of Ukiah, California

A magnitude 1.7 earthquake struck 5 km NE of Ukiah, California on Wed, May 31, 1978, 8:39 PM PDT (03:39 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.9 Northern California. This one was a foreshock.

Ukiah forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.7 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1978-06-01 03:39:40 UTC
Depth
8.5 km (5.3 mi), shallow
Epicenter
39.184° N, 123.161° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.1 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.02
Depth from
From location
Station coverage gap
275°, poorly surrounded by stations
Stations used
6

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 60 in the 60 days after this one and 50 in the 30 days before it.

After

  1. 2.69 km WNW of Healdsburg, California · 17654 days ago · 6 km deep · 63 km away
  2. 2.216 km ENE of Potter Valley, California · 17654 days ago · 0 km deep · 28 km away
  3. 1.812 km S of Willows, California · 17652 days ago · 24 km deep · 88 km away
  4. 1.83 km E of Calpella, California · 17651 days ago · 6 km deep · 5 km away
  5. 1.53 km SE of Calpella, California · 17650 days ago · 6 km deep · 4 km away
  6. 1.77 km W of Cobb, California · 17649 days ago · 0 km deep · 51 km away
  7. 1.86 km ENE of Santa Rosa, California · 17649 days ago · 9 km deep · 92 km away
  8. 1.67 km W of Cobb, California · 17648 days ago · 3 km deep · 51 km away
  9. 1.93 km E of Calpella, California · 17647 days ago · 6 km deep · 5 km away
  10. 1.85 km E of Lower Lake, California · 17647 days ago · 4 km deep · 62 km away
  11. 1.65 km NE of Upper Lake, California · 17646 days ago · 8 km deep · 26 km away
  12. 1.812 km NE of Upper Lake, California · 17644 days ago · 1 km deep · 32 km away
  13. 1.63 km NNE of Nice, California · 17643 days ago · 7 km deep · 28 km away
  14. 1.73 km E of Calpella, California · 17641 days ago · 4 km deep · 6 km away
  15. 1.7Northern California · 17641 days ago · 11 km deep · 38 km away
  16. 1.56 km W of Cobb, California · 17640 days ago · 3 km deep · 51 km away
  17. 1.86 km W of Cobb, California · 17640 days ago · 3 km deep · 51 km away
  18. 2.87 km W of Cobb, California · 17637 days ago · 4 km deep · 51 km away
  19. 1.69 km W of Cobb, California · 17637 days ago · 1 km deep · 50 km away
  20. 2.413 km N of Potter Valley, California · 17636 days ago · 8 km deep · 29 km away
  21. 1.74 km E of Calpella, California · 17635 days ago · 4 km deep · 5 km away
  22. 2.66 km W of Cobb, California · 17632 days ago · 3 km deep · 52 km away
  23. 1.6Northern California · 17632 days ago · 4 km deep · 51 km away
  24. 1.5Northern California · 17632 days ago · 5 km deep · 70 km away
  25. 2.36 km W of Cobb, California · 17630 days ago · 4 km deep · 51 km away
  26. 1.63 km NNE of Cloverdale, California · 17628 days ago · 5 km deep · 41 km away
  27. 2.48 km W of Cobb, California · 17628 days ago · -1 km deep · 50 km away
  28. 1.66 km E of Calpella, California · 17628 days ago · 4 km deep · 5 km away
  29. 1.96 km WNW of Cobb, California · 17627 days ago · 2 km deep · 50 km away
  30. 1.68 km WSW of Cobb, California · 17625 days ago · 1 km deep · 52 km away
  31. 1.97 km W of Cobb, California · 17624 days ago · 3 km deep · 51 km away
  32. 1.65 km N of Larkfield-Wikiup, California · 17624 days ago · 5 km deep · 78 km away
  33. 2.610 km ENE of Healdsburg, California · 17622 days ago · 7 km deep · 67 km away
  34. 2.317 km NNE of Nice, California · 17622 days ago · 11 km deep · 37 km away
  35. 1.817 km NNE of Nice, California · 17622 days ago · 9 km deep · 37 km away
  36. 1.711 km NE of Healdsburg, California · 17622 days ago · 6 km deep · 67 km away
  37. 1.511 km NE of Healdsburg, California · 17621 days ago · 4 km deep · 65 km away
  38. 1.57 km W of Cobb, California · 17621 days ago · 1 km deep · 51 km away
  39. 1.67 km W of Cobb, California · 17620 days ago · 4 km deep · 51 km away
  40. 1.611 km ENE of Healdsburg, California · 17619 days ago · 5 km deep · 67 km away
  41. 1.74 km WSW of Cobb, California · 17616 days ago · 4 km deep · 54 km away
  42. 2.07 km WSW of Cobb, California · 17614 days ago · -1 km deep · 52 km away
  43. 1.97 km WSW of Cobb, California · 17614 days ago · 2 km deep · 52 km away
  44. 2.07 km W of Cobb, California · 17613 days ago · 4 km deep · 51 km away
  45. 1.74 km SE of Calpella, CA · 17611 days ago · 5 km deep · 3 km away
  46. 2.9Northern California · 17610 days ago · 0 km deep · 53 km away
  47. 1.7Northern California · 17609 days ago · 1 km deep · 54 km away
  48. 1.88 km WSW of Cobb, California · 17609 days ago · 3 km deep · 52 km away
  49. 2.45 km WSW of Cobb, California · 17609 days ago · -1 km deep · 54 km away
  50. 2.39 km E of Comptche, California · 17608 days ago · 8 km deep · 29 km away
  51. 1.98 km ENE of Willits, California · 17607 days ago · 4 km deep · 28 km away
  52. 2.00 km N of Kelseyville, California · 17606 days ago · 3 km deep · 36 km away
  53. 1.68 km ENE of Willits, California · 17605 days ago · 4 km deep · 28 km away
  54. 2.34 km WSW of Cobb, California · 17605 days ago · 1 km deep · 54 km away
  55. 1.58 km WSW of Cobb, California · 17604 days ago · 1 km deep · 52 km away
  56. 1.67 km W of Cobb, California · 17604 days ago · 0 km deep · 50 km away
  57. 1.74 km WSW of Cobb, California · 17602 days ago · 3 km deep · 53 km away
  58. 1.57 km W of Cobb, California · 17598 days ago · 4 km deep · 51 km away
  59. 2.04 km WSW of Cobb, California · 17598 days ago · 2 km deep · 54 km away
  60. 1.93 km SE of Willows, California · 17597 days ago · 20 km deep · 93 km away

Before

  1. 1.52 km N of Deer Park, California · 17656 days ago · 13 km deep · 92 km away
  2. 1.69 km SW of Hopland, California · 17656 days ago · -1 km deep · 30 km away
  3. 2.3near the coast of Northern California · 17657 days ago · 6 km deep · 27 km away
  4. 1.67 km WSW of Cobb, California · 17659 days ago · 2 km deep · 52 km away
  5. 3.8Northern California · 17659 days ago · 7 km deep · 80 km away
  6. 2.37 km WSW of Cobb, California · 17660 days ago · 4 km deep · 53 km away
  7. 3.013 km WNW of Laytonville, California · 17662 days ago · 1 km deep · 72 km away
  8. 2.46 km WSW of Cobb, California · 17664 days ago · 2 km deep · 52 km away
  9. 1.67 km W of Cobb, California · 17666 days ago · 4 km deep · 51 km away
  10. 1.74 km WSW of Cobb, California · 17666 days ago · 3 km deep · 53 km away
  11. 2.87 km WSW of Cobb, California · 17667 days ago · 0 km deep · 52 km away
  12. 1.72 km NE of Talmage, California · 17668 days ago · 1 km deep · 3 km away
  13. 2.921 km NE of Potter Valley, California · 17669 days ago · 12 km deep · 37 km away
  14. 2.722 km NE of Potter Valley, California · 17669 days ago · 9 km deep · 37 km away
  15. 2.12 km NW of Redwood Valley, California · 17671 days ago · 9 km deep · 12 km away
  16. 1.73 km ESE of Calpella, California · 17672 days ago · 2 km deep · 5 km away
  17. 1.93 km ESE of Calpella, California · 17673 days ago · 4 km deep · 5 km away
  18. 1.97 km WSW of Cobb, California · 17673 days ago · 4 km deep · 53 km away
  19. 1.99 km ENE of Manchester, California · 17674 days ago · 13 km deep · 42 km away
  20. 1.98 km W of Cobb, California · 17675 days ago · 2 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1040487. Read Thu, Oct 1, 2026, 9:45 PM UTC.